Submission #446517

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
446517	2021-07-22 09:16:24	ritul_kr_singh	Easter Eggs (info1cup17_eastereggs)	C++17	100 / 100	25 ms	360 KiB

eastereggs

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#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
 
vector<int> g[513];
int t[512], dfsTimer;
 
void dfs(int u, int p){
  t[dfsTimer++] = u;
  for(int v : g[u]) if(v != p) dfs(v, u);
}
 
int findEgg (int n, vector <pair<int, int>> e){
  for(int i=0; i<n; ++i) g[i+1].clear();
  dfsTimer = 0;
  
  for(auto &[u, v] : e){
    g[u].push_back(v);
    g[v].push_back(u);
  }
 
  dfs(1, 1);
 
  int x = 0;
  for(int y=n > 16 ? 512 : 16; y/=2; ){
    if(x + y <= n){
      vector<int> q(x+y);
      for(int j=0; j<x+y; ++j) q[j] = t[j];
      x += y * !query(q);
    }
 
 
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• Subtask 1: 40 / 40
• Subtask 2: 40 / 40
• Subtask 3: 20 / 20